Fix resuming VMs (#981)

Fixes qubesos/qubes-issues#981

qubesmanager/main.py

@@ -1093,7 +1093,7 @@ class VmManagerWindow(Ui_VmManagerWindow, QMainWindow):
     @pyqtSlot(name='on_action_resumevm_triggered')
     def action_resumevm_triggered(self):
         vm = self.get_selected_vm()
-        assert not vm.is_running()
+        assert not vm.is_running() or vm.is_paused()
 
         if vm.is_paused():
             try: